Probably the best road I have ever ridden anywhere! The road is just like a race track, nice, smooth, grippy Tarmac and the most incredible views - the fact that there is 80 miles of just adds to its overall awesomeness!!
One of my favorite routes in all of Italy is around Mount Etna in Sicily. Most of the tourist buses head up the volcano from the opposite direction of this route in the morning, so they won't be in the way. After that cars are pretty much non existent. The road like a race track most of the way. I destroyed a set of floorboards and Avon tires on this route because the banked curves where so much fun. Took us 5 hours to do this whole route and we were moving pretty good.